Installation Guide

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Troubleshooting
Problem Solution
Thermostat GFCI
If the thermostat trips and will not reset, check the following: the system
MUST be on a dedicated branch circuit separate from any other electrical
devices which could overload the circuit or create interferences resulting in
the GFCI to trip. Check electrical connections to verify that leads from all mats
are wired in parallel (black to black / white to white / red to red) and that all
connections are tight and properly insulated against grounding. Check leads
from mats to verify that no nicks or cuts have occurred during construction,
which may cause a short. For further assistance with GFCI problems call
1-508-291-2000.
Thermostat Issues
Refer to the thermostat manufacturer’s documentation.
System Too Hot
Adjust thermostat. Verify that the correct voltage is being applied to heating
elements rated for 120V Service. Verify that the thermostat has not been
bypassed. If necessary, reposition the floor temperature sensor.
Floor Not Warming
Verify that the power is connected to the system and that the GFCI is not
tripped at the thermostat, or the breaker is not tripped at the main service
panel.
Slow to Heat
Installations on concrete slabs can require several days to warm up to the
desired temperature, especially if the slab is uninsulated in a cold
environment. Set the thermostat to maximum heat to allow the system to
continue running until it becomes warm. Then adjust the thermostat down if
needed. Verify that the floor temperature sensor is not directly on top of the
heating element, causing the thermostat to shut off more frequently.
Mat Not Warming
Verify that all leads from all mats are connected together to the power
source. Areas within a mat that are not heating could be due to damage and
will require the mat to be replaced.